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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkBox.h,v $
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkBox - implicit function for a bounding box
// .SECTION Description
// vtkBox computes the implicit function and/or gradient for a axis-aligned
// bounding box. (The superclasses transform can be used to modify this
// orientation.) Each side of the box is orthogonal to all other sides
// meeting along shared edges and all faces are orthogonal to the x-y-z
// coordinate axes. (If you wish to orient this box differently, recall that
// the superclass vtkImplicitFunction supports a transformation matrix.)
// vtkCube is a concrete implementation of vtkImplicitFunction.
//
// .SECTION See Also
// vtkCubeSource vtkImplicitFunction
#ifndef __vtkBox_h
#define __vtkBox_h
#include "vtkImplicitFunction.h"
class VTK_COMMON_EXPORT vtkBox : public vtkImplicitFunction
{
public:
vtkTypeRevisionMacro(vtkBox,vtkImplicitFunction);
void PrintSelf(ostream& os, vtkIndent indent);
// Description
// Construct box with center at (0,0,0) and each side of length 1.0.
static vtkBox *New();
// Description
// Evaluate box defined by the two points (pMin,pMax).
double EvaluateFunction(double x[3]);
double EvaluateFunction(double x, double y, double z)
{return this->vtkImplicitFunction::EvaluateFunction(x, y, z); }
// Description
// Evaluate the gradient of the box.
void EvaluateGradient(double x[3], double n[3]);
// Description:
// Set / get the bounding box using various methods.
vtkSetVector3Macro(XMin,double);
vtkGetVector3Macro(XMin,double);
vtkSetVector3Macro(XMax,double);
vtkGetVector3Macro(XMax,double);
void SetBounds(double xMin, double xMax,
double yMin, double yMax,
double zMin, double zMax);
void SetBounds(double bounds[6]);
void GetBounds(double &xMin, double &xMax,
double &yMin, double &yMax,
double &zMin, double &zMax);
void GetBounds(double bounds[6]);
// Description:
// Bounding box intersection modified from Graphics Gems Vol I. The method
// returns a non-zero value if the bounding box is hit. Origin[3] starts
// the ray, dir[3] is the vector components of the ray in the x-y-z
// directions, coord[3] is the location of hit, and t is the parametric
// coordinate along line. (Notes: the intersection ray dir[3] is NOT
// normalized. Valid intersections will only occur between 0<=t<=1.)
static char IntersectBox(double bounds[6], double origin[3], double dir[3],
double coord[3], double& t);
protected:
vtkBox();
~vtkBox() {}
double XMin[3];
double XMax[3];
private:
vtkBox(const vtkBox&); // Not implemented.
void operator=(const vtkBox&); // Not implemented.
};
#endif
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